applehttp: Handle AES-128 encrypted streams

[ffmpeg] / libavcodec / tscc.c

diff --git a/libavcodec/tscc.c b/libavcodec/tscc.c
index d1a924da400bd3fad684842b29f6609028de1757..bd05f02a6199e645b8d7f2bc8f5f6ebf9d9b433e 100644 (file)
--- a/libavcodec/tscc.c
+++ b/libavcodec/tscc.c
@@ -2,25 +2,25 @@
  * TechSmith Camtasia decoder
  * Copyright (c) 2004 Konstantin Shishkov
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 /**
- * @file libavcodec/tscc.c
+ * @file
  * TechSmith Camtasia decoder
  *
  * Fourcc: TSCC
@@ -60,6 +60,8 @@ typedef struct TsccContext {
     unsigned char* decomp_buf;
     int height;
     z_stream zstream;
+
+    uint32_t pal[256];
 } CamtasiaContext;
 
 /*
@@ -107,15 +109,17 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
 
 
     if(zret != Z_DATA_ERROR)
-        ff_msrle_decode(avctx, (AVPicture*)&c->pic, c->bpp, c->decomp_buf, c->zstream.avail_out);
+        ff_msrle_decode(avctx, (AVPicture*)&c->pic, c->bpp, c->decomp_buf, c->decomp_size - c->zstream.avail_out);
 
     /* make the palette available on the way out */
     if (c->avctx->pix_fmt == PIX_FMT_PAL8) {
-        memcpy(c->pic.data[1], c->avctx->palctrl->palette, AVPALETTE_SIZE);
-        if (c->avctx->palctrl->palette_changed) {
+        const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, NULL);
+
+        if (pal) {
             c->pic.palette_has_changed = 1;
-            c->avctx->palctrl->palette_changed = 0;
+            memcpy(c->pal, pal, AVPALETTE_SIZE);
         }
+        memcpy(c->pic.data[1], c->pal, AVPALETTE_SIZE);
     }
 
     *data_size = sizeof(AVFrame);
@@ -141,10 +145,6 @@ static av_cold int decode_init(AVCodecContext *avctx)
 
     c->height = avctx->height;
 
-    if (avcodec_check_dimensions(avctx, avctx->width, avctx->height) < 0) {
-        return 1;
-    }
-
     // Needed if zlib unused or init aborted before inflateInit
     memset(&(c->zstream), 0, sizeof(z_stream));
     switch(avctx->bits_per_coded_sample){
@@ -158,7 +158,8 @@ static av_cold int decode_init(AVCodecContext *avctx)
              return -1;
     }
     c->bpp = avctx->bits_per_coded_sample;
-    c->decomp_size = (avctx->width * c->bpp + (avctx->width + 254) / 255 + 2) * avctx->height + 2;//RLE in the 'best' case
+    // buffer size for RLE 'best' case when 2-byte code preceeds each pixel and there may be padding after it too
+    c->decomp_size = (((avctx->width * c->bpp + 7) >> 3) + 3 * avctx->width + 2) * avctx->height + 2;
 
     /* Allocate decompression buffer */
     if (c->decomp_size) {
@@ -200,9 +201,9 @@ static av_cold int decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-AVCodec tscc_decoder = {
+AVCodec ff_tscc_decoder = {
         "camtasia",
-        CODEC_TYPE_VIDEO,
+        AVMEDIA_TYPE_VIDEO,
         CODEC_ID_TSCC,
         sizeof(CamtasiaContext),
         decode_init,